Short Description of Research:
My research interest is to synthesize and characterize doped graphene and 2D transition metal dichalcogenides (TMD) materials. Different techniques, such as Optical and fluorescent microscopy, Raman spectroscopy, SEM, AFM and TEM are used to characterize the as-grown materials. I have studied the interaction between the pristine & doped graphene (especially N-doped graphene) and other dye molecules and found both experimentally and theoretically that doped graphene will greatly enhanced the Raman signal for certain dye molecules compared to pristine graphene. This Graphene Enhanced Raman Spectroscopy (GERS) will provide routes to molecular sensing applications. I have also carefully studied the Raman features of exfoliated TMDs, such as WSe2 and MoTe2 and some new Raman features are observed which can help differentiate between the vibrations of the outer and interior layers and also help to precisely identify between single and few-layered TMDs.
swf5126 AT psu DOT edu